Event catalog

The Event catalog lists the performance webhook events you can subscribe to. Each event is delivered as a machine-readable HTTP POST with a shared delivery format. Use this page to compare events quickly and jump to their detailed guides.

Events at a glance

Event type	Display name	Purpose	Common actions
`SELLER_PERFORMANCE_NOTIFICATIONS`	`ALARMS`	Daily summary of shipping risks and actions	Generate task list, prioritize fulfillment, prevent auto-cancel
`SELLER_PERFORMANCE_NOTIFICATIONS`	`REPORTS`	Weekly KPI rollup across standards	Trend performance, coach sellers, plan follow ups

Delivery format

All performance events use the same top-level fields. The envelope identifies the event and carries an event-specific payload.

{
"source": {
"eventType": "SELLER_PERFORMANCE_NOTIFICATIONS",
"eventTime": "ISO 8601 timestamp",
"eventId": "UUID"
},
"payload": {}
}

Variant snapshots

Variant type: `ALARMS`

Summary
Daily summary of shipping risks and actions. Use it to prevent auto cancellations and late delivery.

Timing: 6:00 AM PT daily.
Key fields: ordersApiUrl, enNotification.alarms[] with alarmType, orderCount, action, poNumbers.
Guide: Seller performance alarms

Payload snapshot

{ "partnerId": "10900014482", "lastRefreshTs": "2025-09-10 12:52:36 UTC", "ordersApiUrl": "https://developer.walmart.com/", "moreInfoLink": "https://marketplacelearn.walmart.com/guides/Policies%20&%20standards/Performance/Performance-alarms", "supportedLanguages": ["en-US"], "enNotification": { "summary": "We have identified 100 orders that need your immediate attention.", "message": "For information on all the orders, use the Orders API link.", "alarms": [ { "alarmType": "LateOriginScan", "orderCount": 5, "poNumbers": ["123", "456"] }, { "alarmType": "AutoCancelledWarning", "orderCount": 5, "poNumbers": ["123", "456"] } ] }
}

Variant type: `REPORT`

Summary
Weekly KPI rollup across standards. Use it to trend performance and plan coaching.

Timing: 5:00 AM PT Mondays.
Key fields: enNotification.metrics[] with kpi, score, performanceStandard, overallTrend, performanceRiskLevel, duration, developerPortalApiLink.
Trend values
Each KPI includes overallTrend to indicate direction versus the standard and prior period.
GREEN_UP, GREEN_DOWN, NEUTRAL, RED_UP, RED_DOWN. Refer to Seller performance report for meanings and example thresholds.
Risk levels
Each KPI includes performanceRiskLevel with one of Good, Monitor, or Urgent. Refer to Seller performance report for meanings and example thresholds.
Guide: Seller performance report

Payload snapshot

{ "partnerId": "10900014482", "lastRefreshTs": "2025-09-10 12:52:36 UTC", "moreInfoLink": "https://marketplacelearn.walmart.com/guides/Policies%20&%20standards/Performance/Seller-performance-standards?locale=en-US", "supportedLanguages": ["en-US"], "enNotification": { "summary": "Here is the summary of your Walmart performance.", "message": "For order-level details use the API link provided.", "metrics": [ { "kpi": "On-time delivery", "score": 95.8, "overallTrend": "GREEN_UP", "standard": "90% or above", "duration": "30 days" }, { "kpi": "Valid tracking", "score": 99.1, "overallTrend": "GREEN_UP", "standard": "99% or above", "duration": "30 days" } ] }
}

Next steps

Subscribe or update endpoints: Subscribe to performance webhooks
Set up a unified webhook endpoint: Set up your Performance webhooks endpoints
Implement verification: Security and authenticity
Validate in sandbox: Test in sandbox

Reference guide

This catalog lists available performance events and links to their payload schemas and examples.

Get event types: Lists available notification event types, versions, and the required resource value.